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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 7, 2003. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 331 | S07 | W20 | 04 | 0040 | Beta | Apr 6, 2003 | Apr 13, 2003 | Apr 27, 2003 |
| № 330 | N07 | E40 | 03 | 0380 | Beta | Apr 11, 2003 | Apr 18, 2003 | May 1, 2003 |
| № 326 | S11 | W42 | 01 | 0010 | Alpha | Apr 5, 2003 | Apr 11, 2003 | Apr 25, 2003 |
| № 325 | N13 | W47 | 07 | 0250 | Beta | Apr 4, 2003 | Apr 11, 2003 | Apr 25, 2003 |
| № 324 | S12 | W72 | 10 | 0120 | Beta-Gamma | Apr 2, 2003 | Apr 9, 2003 | Apr 23, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to April 2003. The gray background is the average SSN index.
